检索结果-南通市图书馆

Research in Cold and Arid Regions 2014年第6期6卷 577-586页

作者： YanPing Cao ZhuoTong Nan xinglin hu Institute of Arid Meteorology China Meteorological Administration Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences University of Chinese Academy of Sciences Hydrology and Water Resources Bureau of Gansu Province

There are only limited surface water resources available in the Heihe River Basin （HRB）, a typical inland river basin in the arid region of northwestern China, where groundwater overexploitation is a serious problem. Groundwater has become one of main resources of fresh water in the HRB. In this paper, temporal and spatial variations of groundwater in the HRB are estimated by the Gravity Recovery and Climate Experiment （GRACE） satellites. Our analysis shows that groundwater storage in the HRB reaches its highest in the summer of 2005, and then begins to decline in the following years and reaches steady status in 2008. Spatially, groundwater shows a decline in the upper HRB in the first two years and a slight increase in the following years, while this phenomenon is reversed in the middle HRB where groundwater slightly increases in 2005 and then declines in the following three years. In the lower HRB, GRACE detects a continual increase in the full six-year period. This approach is proven successful when employed in the HRB and thus offers a new insight into monitoring groundwater variations in a river basin with limited or even without any observed data.

关键词： GRACE gravity satellites groundwater Heihe River Basin terrestrial water storage

Response of runoff in the headwater region of the Yellow River to climate change and its sensitivity analysis

在线全文

学校读者我要写书评

暂无评论

Journal of Geographical Sciences 2010年第6期20卷 848-860页

作者： LAN Yongchao ZHAO Guohui ZHANG Yaonan WEN Jun hu xinglin LIU Jinqi GU Minglin CHANG Junjie MA Jianhua Key Laboratory of Ecohydrology and Integrated Basin Management CAS Lanzhou 730000 China Cold and Arid Regions Environmental and Engineering Research Institute CAS Lanzhou 730000 China Hydrology and Water Resources Reconnaissance Bureau of Gansu Province Lanzhou 730000 China Institute of the Yellow River Headwater of the Yellow River Conservancy Committee Lanzhou 730030 China

Response of the runoff in the headwater region of the Yellow River to climate change and its sensibility are analyzed based on the measured data at the four hydrological stations and ten weather stations during the period 1959-2008. The result indicates that change of temperature in the region has an obvious corresponding relationship with global warming and the changes of annual average temperature in each subregion in the region have been presenting a fluctuant and rising state in the past 50 years. However the change of precipitation is more intricate than the change of temperature in the region because of the influences of the different geographical positions and environments in various areas, and the change of annual precipitation in the main runoff-producing area has been presenting a fluctuant and decreasing state in the past 50 years. And there is a remarkable nonlinear correlativity between runoff and precipitation and temperature in the region. The runoff in the region has been decreasing continuously since 1990 because the precipitation in the main run-off-producing area obviously decreases and the annual average temperature continuously rises. As a whole, the runoff in each subregion of the headwater region of the Yellow River is quite sensitive to precipitation change, while the runoff in the subregion above Jimai is more sensitive to temperature change than that in the others in the region, correspondingly.

关键词： the headwater region of the Yellow River global warming sensibility response

Possible change on the runoff in the upper Yellow River basin under global climate change

在线全文

学校读者我要写书评

暂无评论

Research in Cold and Arid Regions 2009年第2期1卷 157-164页

作者： YongChao Lan Jun Wen JunJie Chang YeXin Xu YongPing Shen xinglin hu JinQi Lu Key Laboratory of Ecohydrology and Integrated River Basin Science Cold and Arid Regions Environmental and Engineering Research InstituteChinese Academy of SciencesLanzhouGansu 730000China Institute of the Riverhead Region of the Yellow River Water Conservancy Committee of the Yellow River BasinLanzhouGansu 730000China Institute of the Riverhead Region of the Yellow River Water Conservancy Committee of the Yellow River BasinLanzhouGansu 730030China

In this study,the characteristics and changing trends of temperature,precipitation,and runoff in the upper Yellow River basin up Tangnag station are analyzed by using hydrological and meteorological data in the past 50 years from observation stations in the ***,in this study,the evolving trend of runoff in the future decades is forecasted in the basin based on the method of suppositional climate scenes *** results indicate temperature variation in the basin has an evident positive relation with global warming,and the precipitation variations are quite complicated in the basin because of differences of located geographic positions during the past 50 *** in the basin has been decreasing continually since the end of the 1980s because the mean temperature in the basin has been rising and precipitation in the main areas of runoff formation in the basin has been *** will largely decrease if precipitation decreases and temperature rises continuously,whereas runoff will increase if temperature is invariable and precipitation increases largely;the increase magnitude of runoff may be more than that of precipitation because of the synchronously increasing supply of meltwater from snow,glacier,and frozen soils in future several decades.

关键词： global climate change upper Yellow River runoff variation circulation

Study of temperature and precipitation change in upstream mountain area of the Hexi inland river basin since 1960s

在线全文

学校读者我要写书评

暂无评论

Research in Cold and Arid Regions 2012年第6期4卷 522-535页

作者： YongChao Lan HongLang Xiao xinglin hu HongWei Ding SongBing Zou ChengFang La Jie Song Key Laboratory of Ecohydrology in Inland River Basin Chinese Academy of Sciences Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Hydrology and Water Resources Bureau of Gansu Province Hydrology and Water Resources Bureau of the Upper Yellow River Headwater of the Yellow River Conservancy Committee

All rivers in the Hexi inland region of Gansu Province, China, originate from the northern slope of the Qilian Mountains. They are located in the southern portion of the region and respectively belong to the three large river systems from east to west, the Shiyang, Heihe and Shule river basins. These rivers are supplied by precipitation, snowmelt and ice-melt runoff from the Qilian Mountain area. Therefore, changes of precipitation and temperature in the upstream watersheds of these rivers have an important effect on changes of mountainous runoff and reasonable utilization of water resources in this region. For this reason, the Qilian Mountain area, upstream watersheds and runoff forming areas of these rivers are chosen as the study area. The change characteristics and variation trend of temperature and precipitation in this area under the backdrop of global warming axe analyzed based on observa- tional data of relational weather and hydrologic stations in the area. Results show that temperatures in the upriver mountain areas of these three large river basins have been increasing, although the increasing degree is differentially affected by global warming. The rising extent of annual and seasonal temperatures in the upstream mountain area of the Shule river basin located in the west- em Qilian Mountains, were all largest over the past 50 years. Precipitation in the upstream mountain areas of Hexi region＇ three river basins located respectively in the western, middle and eastern Qilian Mountains have been presenting an increasing trend to varying degrees as a whole for more than 50 years. This means that climate in the upstream mountain areas of Hexi region＇ three river basins are becoming increasingly warmer and moister over the past 50 years, which will be very good for the ecological en- vironment and agricultural production in the region.

关键词： global warming upstream mountain area Qilian Mountains three large fiver systems Hexi inland fiver basin

Sensitivity of mountain runoff to climate change for Urumqi and Kaidu rivers originating from the Tianshan Mountains

在线全文

学校读者我要写书评

暂无评论

Research in Cold and Arid Regions 2011年第3期3卷 274-280页

作者： YongChao Lan ZhengYao Ma YongPing Shen ChengFang La Jie Song xinglin hu HongWei Din Key Laboratory of Ecohydrology in Inland River Basin Chinese Academy of Sciences Lanzhou Gansu 730000 China Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou Gansu 730000 China Hydrology and Water Resources Bureau of Gansu Province Lanzhou Gansu 730000 China Hydrology and Water Resources Bureau of the Upper Yellow River Headwater of the Yellow River Conservancy Committee Lanzhou Gansu 730030 China Institute of Hydrogeology and Engineering Geology Gansu Bureau of Geology and Mineral Exploration and Development Zhangye Gansu 734000 China

The mountain watersheds of Kaidu River and Urumqi River, which separately originate from the south and north-side of the Tianshan Mountains in Xinjiang, are selected as the study area. The characteristics and trends on variation of temperature, precipitation and runoff, and the correlativity between temperature, precipitation, and runoffwere analyzed based on the past 40 years of observational data from the correlative hydrological and weather stations in the study areas. Various weather scene combinations are assumed and the response models of runoff to climate change are established in order to evaluate the sensitivity of runoff to climate change in the study areas based on the foregoing analysis, Results show that all variations of temperature, precipitation, and runoff overall present an oscillating and increasing trend since the 1960s and this increase are quite evident after 1990. There is a markedly positive correlation between mountain runoff, temperature, and precipitation while there are obvious regional differences of responding degree to precipitation and temperature between mountain runoff of Ummqi River and Kaidu River Basins Also, mountain runoff of Urumqi River Basin is more sensitive to precipitation change than that of Kaidu River Basin, and mountain runoff of Kaidu River Basin is more sensitive to temperature change than that of Ummqi River Basin.

关键词： south slope north slope Tianshan Mountains Kaidu River Urumqi River climate change sensitivity

黄河上游主要支流径流时空分布规律及演变趋势分析

在线全文

学校读者我要写书评

暂无评论

水文 2011年第3期31卷 90-96页

作者：王静胡兴林甘肃省水文水资源局甘肃兰州730000 中国科学院寒区旱区环境与工程研究所内陆河流域生态与水文重点实验室甘肃兰州730000

基于有关水文站径流观测资料,对黄河上游兰州以上干流与主要支流流域径流的补给来源、时空分布规律及演变趋势进行了分析。结果表明,研究区域内径流的补给来源主要是大气降水汛期(5～10月)水量占年总量的52.4%～68.0%,非汛期地下水补给... 详细信息

基于有关水文站径流观测资料,对黄河上游兰州以上干流与主要支流流域径流的补给来源、时空分布规律及演变趋势进行了分析。结果表明,研究区域内径流的补给来源主要是大气降水汛期(5～10月)水量占年总量的52.4%～68.0%,非汛期地下水补给量占年总量的35.1%～43.1%,冰雪融水量占年总量的2.5﹪～5.0﹪;从空间分布看,由于流域下垫面条件不同,其产流模数在空间的分布差异性很大,产水量较大的区域模数为7.874～8.500L/***2;产水量中等区域模数为5.047～6.536L/***2;产流量较小区模数为3.416～3.812L/***2;从时间上看,自有观测资料至2008年,以1986年为分界点,径流的多年变化过程总体上先表现出具有长持续性的波动上涨、后表现出跌宕中下落的趋势过程;各月径流量的长期变化趋势主要表现为汛期径流量减少的幅度较大,非汛期减少的幅度相对较小。鉴于源区各区间径流持续减少的原因,导致兰州站自1986年以来径流变化过程有显著减少的趋势,且这种变化趋势还在持续。黄河上游径流的持续减少给流域各省的经济与社会、生态与环境的和谐发展带来不利影响,应当引起高度重视。

关键词：径流特征演变趋势分析黄河上游

在线全文

学校读者我要写书评

暂无评论

成人高等教育的特点与改革模式探析

湖北成人教育学院学报 2003年第1期9卷 12-14页

作者：胡相林湖北省直属机关业余大学武汉430070

随着社会主义市场经济的发展和我国加入WTO后教育事业改革发展的深入,成人高等教育将面临着新的发展机遇和挑战。本文着重就这一时代背景下的我国成人高等教育的特点及改革模式进行了深入的探讨。

关键词：成人高等教育教育改革终身教育现代化

Circulating tumor DNA, a potential biomarker from solid tumors monitor to anticancer therapies

在线全文

学校读者我要写书评

暂无评论

Circulating tumor DNA, a potential biomarker from solid tumo...

2017年中国肿瘤标志物学术大会暨第十一届肿瘤标志物青年科学家论坛

作者： Ting Chen Rongzhang He xinglin hu Weihao Luo Zheng hu Jia Li Lili Duan Yali Xie Wenna Luo Tan Tan Di-Xian Luo Institute of Translational Medicine National and Local Joint Engineering Laboratory of High-through Molecular Diagnostic Technologythe First People's Hospital of ChenzhouUniversity of South China Center for Pathology the First People's Hospital of ChenzhouSouthern Medical University Department of Clinical Pharmacology Xiangya Hospital and Institute of Clinical PharmacologyCentral South University and Hunan Key Laboratory of Pharmacogenetics Department of Dermatology the First People's Hospital of ChenzhouSouthern Medical University

Circulating tumor DNA(ctDNA) in peripheral blood is a liquid biopsy target that contains representative tumor information including gene mutations. ctDNA is a promising new avenue for real-time monitoring of tumor progression. As a non-invasive biomarker and potential surrogate for the entire tumor genome, it has been applied to the detection of driver gene mutations and epigenetic alteration and monitoring of tumor burden, acquired resistance, tumor heterogeneity and early diagnosis. Since precise therapy is a strategy that optimal therapy is decided based on simultaneous tumor genome information, ctDNA may help to perform dynamic genetic surveillance. Dynamic marker surveillance may provide critical information to identify disease progression and guide therapeutic options. This review provides an overview on related articles about ctDNA, with a focus on monitoring response of solid tumors to anticancer therapies.

关键词： ctDNA liquid biopsy tumor precise therapy

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

生猪生态养殖技术及发展趋势

畜牧兽医科学（电子版） 2021年第14期 142-143页

作者：胡兴林云南省文山州动物卫生监督所文山663000

生猪养殖业快速发展过程中,显著提升了养殖户的收入水平。但传统生猪养殖模式容易造成严重的环境污染问题,生猪疫病也很容易出现,威胁猪肉制品的安全性,阻碍生猪养殖业整体发展。针对这种情况,要积极探索生猪生态养殖模式,全面优化生猪... 详细信息

生猪养殖业快速发展过程中,显著提升了养殖户的收入水平。但传统生猪养殖模式容易造成严重的环境污染问题,生猪疫病也很容易出现,威胁猪肉制品的安全性,阻碍生猪养殖业整体发展。针对这种情况,要积极探索生猪生态养殖模式,全面优化生猪养殖的各个环节,最大程度上控制生猪养殖对生态环境造成的不利影响。

关键词：生猪生态养殖发展趋势

在线全文

学校读者我要写书评

暂无评论

畜禽粪便污染控制与综合利用

畜牧兽医科学（电子版） 2021年第13期 186-187页

作者：胡兴林云南省文山州动物卫生监督所文山663000

规模的畜禽饲养场普遍都会面临畜禽粪便控制及利用的现实问题,为降低畜禽粪便带来的异味、传染病等影响,可以考虑农业循环经济模式,将畜禽粪便经过杀菌除臭处理后用于渔业,经过高温发酵的粪便可用于农业种植、果林栽培等领域,或者将粪... 详细信息

规模的畜禽饲养场普遍都会面临畜禽粪便控制及利用的现实问题,为降低畜禽粪便带来的异味、传染病等影响,可以考虑农业循环经济模式,将畜禽粪便经过杀菌除臭处理后用于渔业,经过高温发酵的粪便可用于农业种植、果林栽培等领域,或者将粪污引入厌氧沼气池来形成沼气。另外,利用粪便饲养蚯蚓、蜣螂等虫类也能够变废为宝。该文介绍了畜禽粪便污染控制与综合利用。

关键词：畜禽粪便粪便污染污染控制综合利用